Beer-tap.



PATENTED FEB. 18, 1908. J. WAWRZNS 'L 'FER TAP.

APPL-miauw LED /PR.12,1907.

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retrasa" lroma wAwnziNsKi, or osnirosn, wisconsin.

nenn-TAP.

' residing in Oshkosh, in the county of Winnebago and State of `Wisconsin', have invented new and useful Improvements in Beer-'Famav` of which the following is a description, reference being had to the accompanying drawings, which are a This invention as for its object toprovide a beer tap with a back pressure valve of novel construction which Will effectively prevent the pressure from the beer keg entering `the communication leading to the beertap from the air pressure reservoir. i Y Another object of this invention. is rto provide such an improved back pressure valve as an attachment for connection to beer taps of ordinary construction.

Another object of this invention is to provide a back pressure check valve for beer taps which will have a double seating effect.

. Heretofore beer taps have usually been provided with a rubber lip valve to prevent ack .pressure from the beer keg forcing the beer foam through the connection leading to the beer ta from the pressure reservoir, andV as these ru ber lip valves are prevented :from entirely closing if foreign matter lodges be"-V tween the lips thereof, and as they are frequently prevented from closing. properly through other causes, with the result that the beer foam is forced therethrough and into the connections and the air reservoir Where it becomes foul and affects the beer in the keg by the cont` lninated air passing therefrom to the keg, it is the object of this invention to provide a more efficient valve which will positively prevent the passage of liquid into the i e connections.

fit the above and other objects in view the invention consists in the beer tap herein clai1ned,its parts and combinations of parts and all equivalents.v

Referring to the accompanying drawings forming a part hereof, the gure represents a central sectional view'of a beer tap constructed in accordance with this invention.

In these drawings 1 indicates a tubular easing of ordinary construction which is provided with adividedswiveled nut 2 engaging a clamping'head 3 having inwardly extend-A ingdugs 4 to grip 'the ianges of a bung bushing? in the usual manner, there being a gasket 6` etween the end of the bung bushing and the-endof the casing. A packing cap 7 is `tlireade'dgto the upper end of the casing and Specication of Letters Patent.

VApplication filed April l2. 1907., Serial Nof3`6`7818 part of this specification. i.

Patented Feb. 3.3, t

is adapted to force a bushin 8 against a peachn ing ring 9 so as to effectively cose the space between the casing and atube whseh passescentrally therethrough and prevent f or other means for su rol 0f ressure toitiie 1 keg for forcing the beer through tie-- tiibe 1G. A valve casing 12 is 'threaded in the pipe cor.- neetion 13 of the easing 1 instead of the usual nipple carrying a lip valve and is provided with packing 14 to tightly' seal the connection. The valve casing 12 is recessed at one end to provide a valve chamber 1.5 which is closed by a nipple 16 threading the end thereof with a acking 17 closing the connection, the nipp. e beinfJr connected with the rubber tube 18 or ot. er connecting means leading from the pressure reservoir. valve stem 19 passes through the bore of the valve casing 12 and into the bore of thev the end of the nipple 16 with a gasket 21 therebetween. This valve is normally held seated by means of a coil spring 22 surround ing the valve stern Within the valve chamber 15 and bearing at one end against the end of the valve chamber and at the other end against the valve head. The inner end of the valve stem 19 is screw threaded and a nut.

23 is threaded thereon to form a vaive seating against the vend. of the valve casing=2 with a gasket 2li therebetween, there being a jam nut-25 also .threaded on the end of the valve stem to leek the valve nut 23 in its adjustments on the valve stein so that' both valves 2O and 23 'will seat at the same time.

ln assembling the valve the valve stein with the s ring thereon is placed in position in the va ve casing and then the nipple is ightly screwed into place, the spring fielding the valve 2() seated. New the valve nut 23 is threadedon the projecting end ofthe va ve stem until it seats against the end of the valve casing, when the jam nut 25 is turned into. engagement therewith to lock itin its ,vaya a spring surroundin t the tubing 1S er the reservoir to which 1t is 'rnc-cted. The double Valve opens freely to permit the com ressed air to pass trom the reservoir to the ;cg, but is quickly Seated w the pressure m the keg is equal to ni. greater than the pressure in the reser- Vci as when the lieg is iirst opened.

it obvious that 'the valve construction of this invention may constitute a part of the beer tap proper or it may be in the form of an attachment to be connected with beer new in general use. What I claim as my invention. is: v

' A heer tap, comprising a casing, a Valve casing connected thereto and containing a Valve chamber, a nipple closing the `Valve chamber, a valve stem slidable in the valve casing, e check valve on the valve stem seating on the nipple, a spring for holding the valve seated, and a nut threaded on the end of the vaive stem and seating on the end 'of the valve casing to form a secondrcheck valve for closing the passage between the casing and the nipple:

f 2. In a heer tap, a back pressure Valve comprising a valve casing containing a valve chamber, a ni ple closing the valve chamber,y

a Valve stem oosely mounted in the bore of the valve 'casing and Athe ni ple a head on the valve stem in the valve c iamher for seatim7 against the end .of the niple as .a check i e 'valve stem and bearing on the vaive ead and on the end of the valve chamber, and a nut threaded on the end of the Valve stem and seating on the end of the Valve casing to constitute a 'second check valve for preventing the pas A sage of back pressure fromthe beer tap.

3. .en attachment for beer taps, comprismg a valve. casing adapted to be threaded inte the casing of a beer tap, a nipple threaderases ing into the valve casing and closing a valve chamber within the valve casing, a Valve stem loosely mounted in the bore of the valve ,casing and the nipple, a'valve head on the valve stem seating on the end of the nipple as a check valve, a spring surrounding the Valve stem and bearing on the valve head and on the end of the Valve chamber, a nut threaded on the end of the valve stem and seating on the end of the valve casing as a check valve, and a jam nut threaded on the valve stem for locking the said nut in its adjustments.

4. A beer tap, comprising a casing having means for connecting with a bung bushing and a slidable tube for communicating with the interior of the keg with packing between the casing and the tube, a valve casing connection therebetween, a nipple threaded in the end of the valve casing, a gasket closing the connection therebetween, a valve stem looselymounted in the bore of the Valve head on the Valve stem locatedin a Valve chamber of the Valve casing, a gasket on the "valve stem forming a face for the valve head seating against the end of the nipple as a check valve, a coil spring surrounding the JOHN WAWRZINSKI.

Witnesses:

W. F. GRUENEWALD, Cnms PEDERSEN threaded to said casing, a jacket closing the'V casing and' in the bore of the nipple, a valve 

